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A soluble compound of a poisonous element M, when heated with Zn/H 2 SO 4 gives a colourless and extremely poisonous gaseous compound N, which on passing through a heated tube give a silvery mirror of element M. identify M and N.

A soluble compound of a poisonous element M, when heated with Zn/H2SO4 gives a colourless and extremely  poisonous gaseous compound N, which on passing through a heated tube give a silvery mirror of element M. identify M and N.    

Grade:upto college level

1 Answers

Navjyot Kalra
askIITians Faculty 654 Points
8 years ago
The poisonous element M may be As. So on the basis of the given facts,
AsCI3 + 6H \overset{Zn/H_{2}SO_{4}}{\rightarrow}AsH3 + 3HCI
(N)
2AsH3 \overset{\Delta}{\rightarrow}2 As + 3H2
(M)
Hence M = As; N = As H3

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